WO2014102147A1 - Dispositif de détection et son procédé de production - Google Patents

Dispositif de détection et son procédé de production Download PDF

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Publication number
WO2014102147A1
WO2014102147A1 PCT/EP2013/077497 EP2013077497W WO2014102147A1 WO 2014102147 A1 WO2014102147 A1 WO 2014102147A1 EP 2013077497 W EP2013077497 W EP 2013077497W WO 2014102147 A1 WO2014102147 A1 WO 2014102147A1
Authority
WO
WIPO (PCT)
Prior art keywords
detection device
inlet channel
compensation
volume
housing cover
Prior art date
Application number
PCT/EP2013/077497
Other languages
German (de)
English (en)
Inventor
Michel WALZ
Roland Seitz
Wolfgang Woernle
Benjamin BERTSCH
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to JP2015550034A priority Critical patent/JP2016505844A/ja
Priority to EP13817916.3A priority patent/EP2938988A1/fr
Priority to US14/758,442 priority patent/US9714851B2/en
Priority to CN201380068098.8A priority patent/CN104870964B/zh
Publication of WO2014102147A1 publication Critical patent/WO2014102147A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/006—Producing casings, e.g. accumulator cases

Definitions

  • the present invention relates to a detection device and a method for producing such a detection device.
  • Detection devices for detecting a property of a medium are known from the prior art.
  • such detection devices comprise a detection sensor, wherein the detection sensor is arranged in a housing of the detection device.
  • a housing is typically made of plastic, wherein it is manufactured by means of an injection molding process.
  • such a housing has a
  • Housing cover which is also typically made of plastic as a one-piece molded part by means of an injection molding process.
  • the housing cover is then in an assembly step of the detection device together with a seal, for example.
  • a seal for example.
  • Housing attached and the seal protects the detection sensor from disturbing external influences
  • the medium whose properties are to be detected to the detection sensor of the detection device is typically in the
  • housing cover recessed an inlet opening.
  • the housing cover instead of an inlet opening, forms an inlet channel with inlet connection, by way of which the detection device can be brought into communication with the medium.
  • an inlet channel with inlet connection is interesting if, for example, the properties of a medium in a volume, such as, for example, in a hose, which is made of silicone and designed to detect impacts of pedestrians on a vehicle, are to be detected.
  • a compensation element is arranged on the detection device, typically on the housing cover.
  • the compensation element is designed such that it has a defined compensation rate.
  • the compensation rate must be selected so that changes in the properties of the medium are detected in a range relevant to subsequent applications, but other changes are compensated.
  • the compensation element is mounted on or at an opening of the detection device, for example, on the housing cover, which is substantially smaller than the intended inlet opening or, in the present case, smaller than the opening having the inlet channel with inlet nozzle.
  • the compensation opening necessary for the compensation could be formed either with a suitably designed molding tool in one step with the formation of the inlet channel or with a separate molding tool opposite to the molding tool.
  • a channel diameter of 4 mm was selected for the inlet channel and an opening diameter of 0.8 mm for the compensation opening.
  • a compensation element for example, a
  • Adhesive pressure compensation element could be glued to the compensation opening in another process step.
  • a demolding of the inlet channel with the previous manufacturing process is no longer possible.
  • a glued-pressure equalization element with a larger diameter in order to realize the demolding is not effective, since the air flow would be too large and the pressure signal would be distorted.
  • the present invention provides a detection device and a method for producing such a detection device according to the independent claims.
  • Advantageous embodiments emerge from the respective dependent claims and the following description.
  • Housing cover at least one inlet channel with an inlet nozzle for the medium is formed, wherein the inlet channel has a first portion and a second portion, wherein the first portion and the second portion are arranged at a non-zero angle to each other and a closure means the first
  • Section of the inlet channel closes.
  • the inlet nozzle on the housing cover by means of a To design demolding tool in an injection molding process as a one-piece molding.
  • the necessary opening for the removal is closed by a closure means.
  • the function of the detection device remains unchanged despite an inlet channel having a first section and a second section, the sections being arranged at a non-zero angle, in particular at an angle of 90 °, and an efficient production process can be guaranteed.
  • a closure means can be understood as meaning a material such as, for example, a silicone compound or an element such as, for example, a stopper.
  • the opening required for demolding can be closed by press-fitting, welding (e.g., ultrasonic welding, laser welding) or gluing the closure member, and the inlet channel is thus redefined and closed without additional sealing.
  • welding e.g., ultrasonic welding, laser welding
  • the first section of the inlet channel has a compensation opening and, in its longitudinal extension in the direction of the compensation opening, a constant or expanding cross-sectional area.
  • This design of the first section of the inlet channel ensures that the inlet channel can be completely formed by means of a demolding tool in a step of the injection molding process as a one-piece molded part. This can ensure an efficient manufacturing process.
  • the closure means is a closure element and the compensation element is arranged in or on the closure element.
  • the bis- used glued compensating element are pre-molded and the pre-molded compensating element can be used as a closure element. Due to the constructional dimension of the pre-extrusion of the compensating element, the opening in the inlet channel can now be made larger and the complete first section of the inlet channel can be removed from the mold via the side on which the compensating element is attached.
  • a pre-molded compensation element can be procured as a purchased part or manufactured within the manufacturing process.
  • the function of the detection device remains unchanged despite an inlet channel with inlet connection having a first section and a second section, wherein the two sections are arranged at a non-zero angle, in particular at an angle of 90 ° to one another, and it can be more efficient Manufacturing process can be ensured.
  • the medium is a fluid, in particular a gas
  • the first portion of the inlet channel communicates substantially with a first volume
  • the second portion of the inlet channel communicates substantially with a second volume
  • the compensation element equals the measuring properties of the fluid in the first volume and the corresponding properties of the fluid in the second volume substantially.
  • the detection device is the property to be measured of the
  • Fluids is a pressure or a pressure change and / or a volume or a volume change or a temperature or a temperature change or a mass or a mass change of the fluid.
  • the compensation element is a
  • Pressure equalization element and causes the distribution of the fluid in the first volume and the second volume are substantially equal.
  • the compensation element ensures that the pressure in the first volume continues to correspond approximately to the pressure in the second volume.
  • the compensation via the compensation element is done so slowly that a rapid increase in pressure, for example due to an impact, can still be detected.
  • the invented manufacturing method for a detection device has the features that the first portion of the inlet channel and the second portion of the inlet channel are formed as part of a one-piece molding and that the first portion is closed with a closure means.
  • the inlet channel characterized in that the first portion of the inlet channel is closed with a closure means, it is possible to form the inlet channel on the housing cover by means of a demolding tool in an injection molding process as a one-piece molded part. The necessary opening for the removal is closed by a closure means. As a result, the function of the detection device remains unchanged despite an inlet channel having a first section and a second section, wherein the sections are arranged at a non-zero angle, in particular at an angle of 90 ° to one another, and an efficient production process can be used be guaranteed.
  • the first section of the inlet channel has a compensation opening and the cross-sectional area of the first section is formed to be constant or widening in the direction of the compensation opening in the longitudinal extent of the first section.
  • the closure means is a closure element and the compensation element is arranged in or on the closure element.
  • the inlet nozzle was a first demoulding tool and to demould the equalization opening with a second demolding tool, which causes a smaller opening.
  • the smaller opening was then closed with a closure means, for example, a sealing element was glued to the smaller opening as a closure means.
  • a closure means for example, a sealing element was glued to the smaller opening as a closure means.
  • the manufacturing process can be designed efficiently and it is possible to dispense with a separate demolding tool for the formation of the compensation opening.
  • the closure element for closing the compensation opening of the first section is pressed or welded, for. by ultrasonic welding or laser welding, or glued.
  • this embodiment also represents an efficient variant of the manufacturing process.
  • Fig. 1 is a side view of a section of a detection device according to the prior art
  • Fig. 2 is a side view of a section of a housing cover of a detection device according to the prior art
  • FIG. 3 is a detailed view of a side view of a section of a housing cover of a detection device according to the prior art 4 shows a side view of a section of a housing cover of a detection device according to the invention;
  • FIG. 5 shows a detailed view of a side view of a section of a housing cover of a detection device according to the invention
  • Fig. 1 shows a side view of a section of a detection device 100 according to the prior art.
  • the detection device 100 has a housing cover 110 and a detection sensor 130 in a housing 120.
  • the housing cover 110 forms an inlet channel 113 with an inlet connection 112, which is designed such that a volume V2, for example a silicone tube for detecting an impact, can be attached to the inlet connection.
  • the housing cover 110 also has a compensation opening 114, which is closed by a closure element 116 in the form of a glued-on compensation element.
  • the housing 120 has a plug 124 with a plug contact 126 and holding elements 122 in the form of Verklipsache.
  • the housing 120 and the housing cover 110 are manufactured as one-piece molded parts by injection molding.
  • the detection sensor 130 is disposed in the housing 120, and the housing cover 110 is disposed on the housing by means of the retaining members 122
  • a sealing means 142 is attached to the housing cover 110 so that the detection sensor 130 when assembled with the
  • Plug contact 126 is connected and at the same time sealed against interference. tet is.
  • the housing cover 110 has further sealing means 144, which additionally seal the interior of the detection device 100 from disturbing influences.
  • FIG. 2 shows a side view of a section of a housing cover 110 of a detection device 100 according to the prior art.
  • the arrows indicate extension directions for demolding tools that are placed in the mold prior to injection molding and are pulled out of the workpiece after the injection process for demolding the sections. In this way, the inlet passage 113 and the equalizing port 114 are formed. Due to the procedure, the
  • Fig. 3 shows a detail view of a side view of a section of a
  • housing cover 110 of a detection device 100 according to the prior art. It can be clearly seen in FIG. 3 that the cross-sectional area of the compensation opening 114 is significantly smaller than the cross-sectional area of the inlet channel 113. This is necessary in order to regulate the flow rate through the compensation element 116.
  • the flow rate of the balance element 116 determines the rate at which compensation of the medium in the inlet channel 113 or in the connected volume V2 occurs with the medium in the environment around the sensor VI. It should be noted that the compensation takes place so quickly that the recorded values are not distorted. For example, if pressure changes due to an impact are to be measured, compensation must not take place so rapidly that a pressure change due to an impact by the compensation element is compensated immediately.
  • FIG. 4 shows a side view of a section of a housing cover 410 of a detection device 100 according to the invention.
  • the housing cover 410 forms an inlet channel 413, which has a first section 413a and a second section 413b.
  • the two sections 413a, 413b are arranged at a non-zero angle, in this case at a 90 ° angle to one another.
  • the inlet channel 413 can no longer be completely removed from the mold by means of a single demoulding tool.
  • the inlet channel 413 is now removed from the mold by means of two demolding tools.
  • the extension directions of the demolding tools are indicated by the arrows.
  • the compensation opening 414 is substantially larger than necessary or helpful for the compensation process. Therefore, in this embodiment, the compensation opening 414 is closed by means of a closure element 450 in which the compensation element 416 is arranged.
  • the opening required in the first section 413a of the inlet channel 413 is closed by a simple procedure and at the same time the compensation element 414 with a defined compensation rate necessary for a reliable function of the detection device 100 is attached.
  • the closure element 450 in which the compensation element 414 is arranged, is pressed or welded into the inlet channel 413 for closing the compensation opening 416, in particular by means of ultrasonic welding or laser welding, or glued.
  • the cross-sectional area or the diameter of the end portion of the first section 413a of the inlet channel 413 in the region of the compensation opening 416 can be made larger than the cross-sectional area or the diameter of the
  • FIG. 6 shows a flowchart of a production method 600 according to the invention for a detection device 100.
  • a step 610 the
  • Housing cover 410 with inlet channel 413 which has a first portion 413a and a second portion 413b, which are arranged at a non-zero angle, in particular at a 90 ° angle to each other, formed as a one-piece molded part.
  • the first section 413a of the inlet channel 413 is closed with a closure element 450.
  • a detection is made.
  • sensor housing 130 is arranged in a housing 120 and the housing cover 410 is fastened by means of sealing elements 142, 144 and holding elements 122 to the housing 120, so that the detection sensor 130 contacts the plug contact 126.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

Dispositif de détection servant à détecter une propriété d'un milieu, présentant au moins un détecteur disposé dans un boîtier pourvu d'un couvercle se présentant sous la forme d'une pièce moulée d'un seul tenant. Un élément de compensation est disposé dans ou sur le boîtier de couvercle. Ce dernier forme au moins un canal d'entrée pourvu d'une tubulure d'entrée pour le milieu, le canal d'entrée présentant une première partie et une deuxième partie, la première et la deuxième partie formant entre elles un angle différent de zéro. Un élément de fermeture obture la première partie du canal d'entrée.
PCT/EP2013/077497 2012-12-27 2013-12-19 Dispositif de détection et son procédé de production WO2014102147A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2015550034A JP2016505844A (ja) 2012-12-27 2013-12-19 検出装置、および検出装置を製造する方法
EP13817916.3A EP2938988A1 (fr) 2012-12-27 2013-12-19 Dispositif de détection et son procédé de production
US14/758,442 US9714851B2 (en) 2012-12-27 2013-12-19 Detection device and method for producing a detection device
CN201380068098.8A CN104870964B (zh) 2012-12-27 2013-12-19 检测装置及制造检测装置的方法

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE102012224383.6 2012-12-27
DE102012224383 2012-12-27
DE102013200633 2013-01-17
DE102013200633.0 2013-01-17
DE102013208545.1 2013-05-08
DE102013208545.1A DE102013208545A1 (de) 2012-12-27 2013-05-08 Erfassungseinrichtung und Verfahren zur Herstellung einer Erfassungseinrichtung

Publications (1)

Publication Number Publication Date
WO2014102147A1 true WO2014102147A1 (fr) 2014-07-03

Family

ID=50928646

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/077497 WO2014102147A1 (fr) 2012-12-27 2013-12-19 Dispositif de détection et son procédé de production

Country Status (6)

Country Link
US (1) US9714851B2 (fr)
EP (1) EP2938988A1 (fr)
JP (1) JP2016505844A (fr)
CN (1) CN104870964B (fr)
DE (1) DE102013208545A1 (fr)
WO (1) WO2014102147A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015101112A1 (de) * 2015-01-27 2016-07-28 Epcos Ag Sensor
WO2021148180A1 (fr) * 2020-01-23 2021-07-29 Continental Automotive Gmbh Capteur de choc à corps tubulaire

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013208541A1 (de) * 2012-12-27 2014-07-03 Robert Bosch Gmbh Erfassungseinrichtung und Verfahren zur Herstellung einer Erfassungseinrichtung
DE102016209189A1 (de) 2016-05-26 2017-11-30 Volkswagen Aktiengesellschaft Deckel zur abdichtenden Anordnung an einem Gehäuse und Anordnung eines Deckels an einem Gehäuse
WO2019166605A1 (fr) * 2018-03-02 2019-09-06 Grundfos Holding A/S Capteur de pression
US11156292B2 (en) 2018-03-19 2021-10-26 Veoneer Us Inc. Pressure sensor unit with circular gasket
DE102018206210A1 (de) 2018-04-23 2019-10-24 Continental Automotive Gmbh Deckelanordnung für einen Sensor sowie Fußgängerschutzsensor für ein Fahrzeug
US10670485B2 (en) 2018-03-22 2020-06-02 Veoneer Us Inc. Pressure sensor unit with rectangular gasket
US10670484B2 (en) 2018-03-26 2020-06-02 Veoneer Us Inc. Pressure sensor unit including snap fit circular seal
US10942079B2 (en) 2018-03-29 2021-03-09 Veoneer Us Inc. Rectangular snap fit pressure sensor unit
KR102146046B1 (ko) * 2019-03-26 2020-08-19 한국단자공업 주식회사 압력센서

Citations (3)

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Publication number Priority date Publication date Assignee Title
WO1993007457A1 (fr) * 1991-10-04 1993-04-15 Robert Bosch Gmbh Capteur de pression
DE10127485A1 (de) * 2001-06-07 2002-12-12 Wabco Gmbh & Co Ohg Steckvorrichtung für ein Elektronikgehäuse
DE102006040665A1 (de) * 2005-08-31 2007-03-08 Denso Corp., Kariya Drucksensor

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US4399707A (en) 1981-02-04 1983-08-23 Honeywell, Inc. Stress sensitive semiconductor unit and housing means therefor
JPS5880542U (ja) * 1981-11-26 1983-05-31 豊興工業株式会社 圧力検知装置
JPS6015648U (ja) * 1983-07-12 1985-02-02 カルソニックカンセイ株式会社 圧力計の脈動防止装置
US4513623A (en) 1983-09-09 1985-04-30 Kulite Semiconductor Products, Inc. Transducer housing employing crimped leads
JPH10153511A (ja) * 1996-11-20 1998-06-09 Tokin Corp 圧力センサ
JP3840784B2 (ja) * 1998-02-26 2006-11-01 株式会社デンソー 圧力センサ
JP2007114001A (ja) * 2005-10-19 2007-05-10 Denso Corp 圧力センサ
JP4730128B2 (ja) * 2006-02-24 2011-07-20 株式会社ジェイ・エム・エス 回路内圧センサ用検出ユニット、回路内圧センサ
EP2089684B1 (fr) 2006-11-22 2010-06-09 Danfoss A/S Capteur de pression
DE102008040155A1 (de) 2008-07-03 2010-01-07 Robert Bosch Gmbh Sensorgehäusedeckel und Verfahren zur Herstellung eines solchen Sensorgehäusedeckels

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
WO1993007457A1 (fr) * 1991-10-04 1993-04-15 Robert Bosch Gmbh Capteur de pression
DE10127485A1 (de) * 2001-06-07 2002-12-12 Wabco Gmbh & Co Ohg Steckvorrichtung für ein Elektronikgehäuse
DE102006040665A1 (de) * 2005-08-31 2007-03-08 Denso Corp., Kariya Drucksensor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015101112A1 (de) * 2015-01-27 2016-07-28 Epcos Ag Sensor
DE102015101112B4 (de) * 2015-01-27 2018-05-09 Tdk Corporation Sensor
WO2021148180A1 (fr) * 2020-01-23 2021-07-29 Continental Automotive Gmbh Capteur de choc à corps tubulaire

Also Published As

Publication number Publication date
CN104870964B (zh) 2017-08-15
US9714851B2 (en) 2017-07-25
CN104870964A (zh) 2015-08-26
US20160195413A1 (en) 2016-07-07
DE102013208545A1 (de) 2014-07-03
JP2016505844A (ja) 2016-02-25
EP2938988A1 (fr) 2015-11-04

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